[1shooter]

Originally Posted by Bemidjiboy

Hey guys. I was just about to post a similar thread, but here you are. I just returned my 597 with down imaging to one without (the sales guy hadn't told me that the downscan wouldn't work on the US2). I had a similar problem and was curious to see if the 597CI unit worked better. NO - just like you say, Trego - depth all over the place and horrible picture....UNLESS you turn off the trolling motor. So, it seems to be an interference problem as my rigging guy suspected. He showed me a little box (matchbox size) around which you have to wrap the transducer cable a few times or something like that. Says you can only get them from Humminbird (accoring to his rep). Weird stuff, but our issue seems to be the same: The US2 transducer isn't worth a crap when the Terrova is running.
I don't like the idea of extra rigging for something that is supposed to work in the first place. Anybody from Johnson Outdoors listening??

What is humminbird telling you?